Improvement in revolving puddling-furnaces for treating iron and steel



.. UNITED STATES '-clcar, and exact description thereof, reference ofthe rotary refining-chamber adapted to hold' Ashifted from the mouth of the refinery. Fig.

the refinery, looking rearward or toward the A the refinery.

which communicates, by a numl-er o1" small tuyeres, d, with the interior of the nre-cham- PATENT OFFICE.

SAMUEL DANKS, 0F CINCINNATI, OHIO.

IMPROVEMENT IN REVOLVING PUDDLlNG-FURNACES FOR TREATING IRON AND STEEL.

Specification forming part of Letters Patent No. 84,347, dated November 24, 1868.

To all whom Iit may concern:

Beit known that I,"SAMUEL DANKS, of Oincinnati, Hamilton county, Ohio, have invented certain new an'd useful Improvements in Mechanical Puddling and Boiling Furnaces; and I hereby declare the following to be a full,

heilig had to the accompanying drawings, making part of this specification.

My improvements are chieiiy designed for the kind of piuldling-furnace in which the mass or `ball of iron is formed by the`mechani cal action of a rotary refining-chamber; and the rst part of my invention consists in a form and properly preserve the fettlin g, and so constructed as to be preserved from overheating, by means of water.

The second part of my invention consists in making removable that portion of the iiue which fronts the rotary refinery, so as, .by turns, to discharge the functions of a fine and the functions of a door.

The third part of my invention consists in the combination of a water-back with a rotary refining-chamber, in the manner hereinafter described.

In the accompanying drawings, Figure 1 is a perspective view of a puddling-furnace e111- bodying my invention, the flue-section being 2 is a longitudinal view in the plane of the reiinerys'axis. Fig. 3 is atransverse sectlon of iire. Fig. 4 is a front view, partly in section, of my Water-bridge; Fig. 5 is a transverse section,'to an enlarged scale, of a portion of Fig. 6 represents a modification of my shiftable line-section.

' Arepresents the grate or fire-cham ber, having one blast-inlet, B, below the grate, and another blast-inletin rear of the grate and above the ii're. This latter inlet consists of a pipe, D,

ber, at the rear Iside thereof.

The grate or fire-chamber may have the customary construction of fire-bricks inclosed by iron plates, and has one or more customary side doors, E, and has on its front an opening or passage, F, which. communicates with the interior of my rotary reiinery.

The under side of the passage F is formed l 1nto abrldge, G, within which circulates a coil of cold-water pipes, H.

My vrefinery proper, or puddling-chamber, consists, essentially, of an open-ended cylinder, I, of v either wrought or cast iron, and having,'preferably, the stepped or conical ends J, for the reception of rollers K, so arranged as to both properly support and hold in place wlile permitting the free rotation of the cyl- 1n er.

The cylinder I is, at equal distances around its periphery, slotted longitudinally to receive ribs L, preferably in the form of troughs, which open outward, as shown, and have anges l, to

maintain their-proper place in the cylinder.

rIhese trough-1ike ribs serve the double purpose of key-pieces to hold the fettling, and of receptacles for water, steam, or air, to preserve the cylinder and fettling, and the ribs themselves, from burning out.

The cylinder may also lie pierced for the reception of one or more protuberances, M, made hollow and opening outward, for the reception i of water, steam, or air, and corrugated on that portion of their surface whi ch is presented to the interior of the cylinder, in order more effectually to hold and retain the enamel, of slag or vitreous matter, Whose comparative infusibility and slow conduction serve t0 protect the said protuberan'ces. Said enamel is also useful in that its weaker afiinity for the metal enables the latter to roll easily oii', instead of sticking to the ribs, and protuberances, as it would do were the latter not thus protected.

Encirclingthe cylinder I maybe a cog-wheel, N, with which meshes a pinion, O, by which this cylinder is rotated.' 1

That portion or section, I), of the ilue imme diately in front of the cylinder may be suspended, by hangers Q, and roller It, to a track .or way, S, along which the said sectionis capable of being slid or shifted, so as either to close the mouth of the cylinder, for paddling and balling, or to open the same, for removing the ball and inserting a new charge.

The section P may have a customary stopor otherwise secured upon it.

' the furnace, which stack may be ive to heat the blast, &c.

per-hole, p, for inspection or manipulation of the ball, when so desired.

. ,The sectionl P communiates, when closed,

with a stationary portion, T, ol the iiue. v

Water may be conveyed to Ithe ribs L and to the protuberances M, and to any other portion required to be kept cool, .by meansof fau-A v cets U.

The neck z' of thel cylinder mabr be thuscooled, or by one or more Water-scoops lshrunk is a tapping-hole, to enable the attendant I to discharge the slag` or cinder after aheat, or

lat lany'other time when in superabundance.

:The cylinder having' been lined With suitable liettlingg-as above explained, its rotation temporarilyarrested, and the blast closed, the

y iiue-section I) is slid open, and the charge being inserted, said section is again closed. The blast isthen, turned on and the cylinder set again 11i-motion.

Communication between the grate and-rotary cylinder being-.at ne time broken or disturbed, the heatisretainedwithin the furnace, instead' ofy escapingginto-th'e face of the operator, and-allowing the4 ingress of'. cold air,

which retards thepuddling and-Wastes the.

heat, as experienced in wv tho's'l'eforms of mechanical puddlers whose` cylinders are shifted bodily at everyv charge.

The shiftable fluefsectionmay-be supported upon a ground-track, as in Fig-6, so as to al,-

low. the stack to be placed immediately over made eiiect- I have described my improvements in their application to a-puddling-furnace, but may apply the sama-'in Whole or part, to various forms of heating and relining furnaces used in the manufacture of Wrought-iron and steel.

I am aware that rotary rlining-chambers Fhave before' been used in puddling-furnaces, and also that they have been constructed with internal longitudinal ribs lto agitate the iron, and have' been made removablel from the furnace to expose their ends. These devices, therefore, Ido not claim; but

What I do claim, and desire to secure by Letters Patent, is-.-

' l. The hollow ribs L and protuberances M (either or' both) in the metal shell ofthe rotary troughs or pockets for the reception of water, in the manner and for the purposes set forth. 2. The shiftable piece l?, employed, in compurpose of a door and a tlue, as described.'

3. The arrangement and adaptation, substantiallyas described, of the water-bridge G H, in 'combination with the fire-chamber A and rotary paddling-chamber I, for the 'purpose set forth.

set my'hand.

SAMUEL DANKs. I

fWitnesses: v l

GEORGE H. KNIGHT,

JAMES H. LAYMAN.

refining-cylinder I, forming, on the outside,

bination with a rotary refinery, for the double In testimony of which invention I hereunto 

